ext/numo/narray/math.c in numo-narray-0.9.1.2 vs ext/numo/narray/math.c in numo-narray-0.9.1.3

@@ -12,11 +12,11 @@
 static ID id_send;
 static ID id_UPCAST;
 static ID id_DISPATCH;
 static ID id_extract;
 
-VALUE
+static VALUE
 nary_type_s_upcast(VALUE type1, VALUE type2)
 {
     VALUE upcast_hash;
     VALUE result_type;
 
@@ -33,11 +33,11 @@
     }
     return result_type;
 }
 
 
-VALUE nary_math_cast2(VALUE type1, VALUE type2)
+static VALUE nary_math_cast2(VALUE type1, VALUE type2)
 {
     if ( RTEST(rb_class_inherited_p( type1, cNArray )) ){
 	return nary_type_s_upcast( type1, type2 );
     }
     if ( RTEST(rb_class_inherited_p( type2, cNArray )) ){
@@ -55,11 +55,11 @@
 }
 
 
 VALUE na_ary_composition_dtype(VALUE);
 
-VALUE nary_mathcast(int argc, VALUE *argv)
+static VALUE nary_mathcast(int argc, VALUE *argv)
 {
     VALUE type, type2;
     int i;
 
     type = na_ary_composition_dtype(argv[0]);
@@ -80,10 +80,10 @@
   @overload method_missing(name,x,...)
   @param [Symbol] name  method name.
   @param [NArray,Numeric] x  input array.
   @return [NArray] result.
 */
-VALUE nary_math_method_missing(int argc, VALUE *argv, VALUE mod)
+static VALUE nary_math_method_missing(int argc, VALUE *argv, VALUE mod)
 {
     VALUE type, ans, typemod, hash;
     if (argc>1) {
 	type = nary_mathcast(argc-1,argv+1);